Wiring Install Directions for Hayes Air Brake to Electric Trailer Brake Controller

Question

Question:

I have an air brake controller that I am installing on a 1997 Kenworth T300. Can you tell me how to wire this unit? It has 4 wires blue,red,black,white

asked by: Randy S

0

Expert Reply:

The black wire of the Hayes controller part # HA100400C is for the 12 volt power source. This powers the controller. The red wire will need to attach to the output side of the truck or tractor's stoplight switch. White is ground.

The blue wire goes to the brake output circuit of the trailer connector. This carries the voltage to the trailer brake assemblies.

expert reply by: Jameson C

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Answer 1

On a 7-Way trailer connector the brake lights and turn signals are on the same circuits. The pins in the connector at the 3 o'clock and 9 o'clock positions are the turn signal and brake light circuits. On the tow vehicle side use a…

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Answer 2

The trailer brakes work on a separate circuit than the lights. You have a couple of options to control the electric brakes on the trailer. One option is to use an air over electric brake control, #HA100400C. This unit connects to the air brakes on…

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Answer 3

On a 7 pin round which is the common connection on a semi trailer, the clearance/marker lights are at the 10 o clock position when you look at the trailer wiring connection. When looking at the connector on the back of the truck, that will put the…

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Answer 4

You do have the option to utilize the air brakes on your 2023 Freightliner Cascadia to control electric trailer brakes using the Hayes Air Actuated Trailer Brake Controller, part #HA100400C. However, we mostly recommend just using an electric brake…

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Answer 5

There are a number of factors involved when converting a semi 7-way to an RV 7-way. Semis generally use a 7-pin round pin socket, similar to #PK11720. And RV style 7-way uses blades, like #PK12706. We do not offer any pre-made adapters to make this…

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Answer 6

Either way is correct. It depends on if you want to keep the semi-style 7-Way (if you need to tow that type of trailer) or if you will never be towing a semi-trailer. If you need to keep the 7-Way semi active on the truck, then you would need to make…

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Answer 7

You certainly can! Installing a brake controller is fairly easy if you are familiar with running wiring. To install a brake controller like the popular Tekonsha Prodigy P3 #90195 you will need to run the wires on the pigtail to the following…

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Answer 8

The wiring on a semi is not normally the same as a standard RV or Gooseneck trailer. You will need to use a couple different harnesses to get what you are looking for. I recommend the ZCI Circuit Protected Vehicle Wiring Harness w/ 4-Pole Flat…

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Answer 9

The Tekonsha Prodigy P3 Trailer Brake Controller #90195 is a fit for your 2020 Tiffin Allegro Red Motorhome and is a favorite for ease of use. The Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires…

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Answer 10

The Redarc Tow Pro Elite part #RED44FR that you referenced would be a great option for a brake controller for your 2019 Tiffin Zephyr. This is a proportional brake controller that sense how hard you are applying the vehicle brakes and applies the…

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Answer 11

You can certainly add a 7-way trailer connector to your trailer with 6 wires. You would simply have 1 pin on the 7-way connector that did not function. I recommend adding a 7-way molded trailer wire connector like part #H20046, and a junction box…

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Answer 12

The black wire of the Hopkins 7-Way Molded Trailer Wire Connector #HM20048 carries the 12 volt accessory circuit. This is the circuit that will typically power interior lights or charge a trailer's battery. I attached a help article that covers…

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Wiring Install Directions for Hayes Air Brake to Electric Trailer Brake Controller

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